F-Tile 25G Ethernet Intel® FPGA IP User Guide

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ID 750198
Date 2/09/2023
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Document Table of Contents
Document Table of Contents x
1. About the F-Tile 25G Ethernet Intel FPGA IP User Guide 2. About this IP 3. Getting Started 4. F-tile 25G Ethernet Intel FPGA IP Parameters 5. Functional Description 6. Reset 7. Interfaces and Signal Descriptions 8. Control, Status, and Statistics Register Descriptions 9. Document Revision History for the F-tile 25G Ethernet Intel® FPGA IP User Guide
2. About this IP x
2.1. Release Information 2.2. Features 2.3. Device Family Support 2.4. Performance and Resource Utilization
3. Getting Started x
3.1. Installing and Licensing Intel® FPGA IP Cores 3.2. Specifying the IP Core Parameters and Options 3.3. Simulating the IP Core 3.4. Generated File Structure 3.5. Integrating Your IP Core in Your Design 3.6. Compiling the Full Design and Programming the FPGA
3.1. Installing and Licensing Intel® FPGA IP Cores x
3.1.1. Intel® FPGA IP Evaluation Mode
3.5. Integrating Your IP Core in Your Design x
3.5.1. Pin Assignments 3.5.2. Adding the F-tile Reference and System PLL Clocks Intel® FPGA IP 3.5.3. Placement Settings for the 25G Ethernet Intel FPGA IP Core
5. Functional Description x
5.1. F-tile 25G Ethernet Intel FPGA IP Core Functional Description 5.2. User Interface to Ethernet Transmission
5.1. F-tile 25G Ethernet Intel FPGA IP Core Functional Description x
5.1.1. F-tile 25G Ethernet Intel FPGA IP TX MAC Datapath 5.1.2. 25 GbE TX PCS 5.1.3. F-tile 25G Ethernet Intel FPGA IP Core RX MAC Datapath 5.1.4. Link Fault Signaling Interface 5.1.5. 25 GbE RX PCS 5.1.6. Flow Control
5.1.1. F-tile 25G Ethernet Intel FPGA IP TX MAC Datapath x
5.1.1.1. Frame Padding 5.1.1.2. Preamble Insertion 5.1.1.3. Inter-Packet Gap Generation and Insertion 5.1.1.4. Frame Check Sequence (CRC32) Insertion
5.1.3. F-tile 25G Ethernet Intel FPGA IP Core RX MAC Datapath x
5.1.3.1. IP Core Preamble Processing 5.1.3.2. IP Core Malformed Packet Handling 5.1.3.3. Length/Type Field Processing
5.1.3.3. Length/Type Field Processing x
5.1.3.3.1. Length Checking 5.1.3.3.2. RX CRC Checking and Dynamic Forwarding
5.1.6. Flow Control x
5.1.6.1. TX Pause/PFC Flow Control Frame Transmission Request 5.1.6.2. XON/XOFF Pause Frames
5.2. User Interface to Ethernet Transmission x
5.2.1. Order of Transmission 5.2.2. Bit Order For TX and RX Datapaths
7. Interfaces and Signal Descriptions x
7.1. TX MAC Interface to User Logic 7.2. RX MAC Interface to User Logic 7.3. Transceivers 7.4. Transceiver Reconfiguration Signals 7.5. Avalon® Memory-Mapped Management Interface 7.6. Miscellaneous Status and Debug Signals 7.7. Clock Signals 7.8. Reset Signals
8. Control, Status, and Statistics Register Descriptions x
8.1. TX MAC Registers 8.2. RX MAC Registers 8.3. Pause/PFC Flow Control Registers 8.4. Statistics Registers 8.5. Hard IP Registers
8.4. Statistics Registers x
8.4.1. TX Statistics Registers 8.4.2. RX Statistics Registers
1. About the F-Tile 25G Ethernet Intel FPGA IP User Guide
2. About this IP
3. Getting Started
4. F-tile 25G Ethernet Intel FPGA IP Parameters
5. Functional Description
6. Reset
7. Interfaces and Signal Descriptions
8. Control, Status, and Statistics Register Descriptions
9. Document Revision History for the F-tile 25G Ethernet Intel® FPGA IP User Guide

5.2. User Interface to Ethernet Transmission

The IP core reverses the bit stream for transmission per Ethernet requirements. The transmitter handles the insertion of the inter-packet gap, frame delimiters, and padding with zeros as necessary. The transmitter also handles FCS computation and insertion.

The IP core transmits complete packets. After transmission begins, it must complete with no IDLE insertions. Between the end of one packet and the beginning of the next packet, the data input is not considered and the transmitter sends IDLE characters. An unbounded number of IDLE characters can be sent between packets.


Section Content
Order of Transmission
Bit Order For TX and RX Datapaths

Level Two Title